Method of starting up a thermoreactor
US-2015337758-A1 · Nov 26, 2015 · US
Method for estimating slippage of a selective catalyst reduction system
US9080488B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9080488-B2 |
| Application number | US-201113071321-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 24, 2011 |
| Priority date | Mar 24, 2011 |
| Publication date | Jul 14, 2015 |
| Grant date | Jul 14, 2015 |
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Abstract
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A method for determining NH 3 and NOx slippage through a SCR is described. In one example, signals from NOx sensors positioned upstream and downstream of a SCR are processed and provide indication of NH 3 and NOx slippage. Engine emissions may be reduced with information provided via the NOx sensors, at least during some conditions.
First claim
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The invention claimed is: 1. A method for operating an engine actuator, comprising: providing an output of a first NOx sensor to a controller, the first NOx sensor operatively coupled to the controller; using the controller, providing a NH3 concentration of a gas from a convolution of only a decaying part of a transient NOx signal and the output of the first NOx sensor, the transient NOx signal representative of NOx in an exhaust passage located upstream of the first NOx sensor…
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Cross-Sectional Technologies · mapped topic
- F01N3/18Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9080488B2 cover?
- A method for determining NH 3 and NOx slippage through a SCR is described. In one example, signals from NOx sensors positioned upstream and downstream of a SCR are processed and provide indication of NH 3 and NOx slippage. Engine emissions may be reduced with information provided via the NOx sensors, at least during some conditions.
- Who is the assignee on this patent?
- Upadhyay Devesh, Van Nieuwstadt Michiel J, Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F01N3/18. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jul 14 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).